SIGA Ownership | Who Owns SIGA?

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SIGA Ownership Summary

SIGA is owned by 10.25% institutional investors, 43.23% insiders, and 46.52% retail investors. Blackrock is the largest institutional shareholder, holding 5.50% of SIGA shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 1.73% of its assets in SIGA shares.

SIGA Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	SIGA	10.25%	43.23%	46.52%
Sector	Healthcare Stocks	42.54%	10.83%	46.63%
Industry	Specialty & Generic Drug Manufacturers Stocks	26.16%	11.89%	61.94%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	3.91M	5.50%	$29.71M
Blackrock funding, inc. /de	3.53M	4.93%	$32.26M
Vanguard group	2.66M	3.72%	$24.30M
Dimensional fund advisors lp	2.43M	3.40%	$22.25M
Altravue capital	2.42M	3.38%	$22.12M
American century companies	1.23M	1.72%	$11.28M
State street	1.03M	1.45%	$9.46M
Geode capital management	998.22K	1.40%	$9.14M
Jupiter asset management	990.65K	1.39%	$9.06M
Arrowstreet capital, limited partnership	834.68K	1.17%	$7.64M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Altravue capital	2.42M	1.83%	$22.12M
First wilshire securities management	687.90K	1.67%	$6.29M
Summerhaven investment management	122.71K	0.65%	$1.12M
Legato capital management	512.04K	0.51%	$4.69M
Corton capital	19.82K	0.45%	$181.38K
Penn mutual asset management	38.28K	0.44%	$249.59K
Denali advisors	360.30K	0.37%	$3.30M
Uniplan investment counsel	396.52K	0.36%	$3.63M
October effect	25.67K	0.26%	$234.84K
Cormorant asset management, lp	500.00K	0.22%	$3.79M

Top Buyers

Holder	Shares	% Assets	Change
Cormorant asset management, lp	500.00K	0.22%	500.00K
Blackrock	3.91M	0.00%	458.39K
Arrowstreet capital, limited partnership	834.68K	0.00%	255.90K
Csm advisors	596.51K	0.15%	238.25K
Jpmorgan chase	211.06K	0.00%	186.07K

Top Sellers

Holder	Shares	% Assets	Change
Hotchkis & wiley capital management	827.59K	0.02%	-1.24M
Van lanschot kempen investment management	-	-	-924.81K
General american investors	-	-	-539.74K
Millennium management	67.73K	0.00%	-459.83K
Price jennifer c.	-	-	-360.00K

New Positions

Holder	Shares	% Assets	Change	Value
Cormorant asset management, lp	500.00K	0.22%	500.00K	$3.79M
Brandywine global investment management	181.63K	0.01%	181.63K	$1.66M
Cubist systematic strategies	126.92K	0.01%	126.92K	$1.16M
Winton group	105.58K	0.04%	105.58K	$966.08K
Acadian asset management	85.48K	0.00%	85.48K	$778.00K

Sold Out

Holder	Change
Nelson, van denburg & campbell wealth management group	-10.00
Financial gravity asset management	-18.00
Jones financial companies lllp	-39.00
Stephens consulting	-65.00
Coldstream capital management	-89.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	72	-59.55%	7,324,679	-78.73%	10	0.44%	30	-68.75%	21	-59.62%
Jun 30, 2025	175	6.71%	34,353,986	-2.06%	48	1.99%	94	27.03%	51	-12.07%
Mar 31, 2025	162	-9.50%	35,019,103	1.38%	49	2.09%	75	-15.73%	55	3.77%
Dec 31, 2024	170	-4.49%	33,321,321	-6.53%	46	1.87%	84	-9.68%	51	6.25%
Sep 30, 2024	176	10.69%	35,600,852	5.32%	49	2.21%	92	2.22%	48	20.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	1.24M	1.73%	-
Vanguard Total Stock Mkt Idx Inv	1.21M	1.69%	-26.68K
Avantis US Small Cap Value ETF	1.05M	1.47%	-
iShares Russell 2000 ETF	1.01M	1.41%	-
First Wilshire US SCV Equities SMA	600.95K	0.84%	-771.97K
Delaware Total Return A	510.39K	0.71%	-
Macquarie Wealth Builder Institutional	510.39K	0.71%	-
Kempen (Lux) Global Small-Cap I	474.24K	0.66%	-250.99K
DFA US Targeted Value I	458.39K	0.64%	13.56K
Vanguard Institutional Extnd Mkt Idx Tr	432.14K	0.60%	-177.87K

Insider Transactions Trends

Date	Buy	Sell
2025 Q3	-	-
2025 Q2	-	-
2025 Q1	-	-
2024 Q4	-	-
2024 Q3	-	-

SIGA Ownership FAQ

Who Owns SIGA?

SIGA shareholders are primarily institutional investors at 10.25%, followed by 43.23% insiders and 46.52% retail investors. The average institutional ownership in SIGA's industry, Specialty & Generic Drug Manufacturers Stocks, is 26.16%, which SIGA falls below.

Who owns the most shares of SIGA?

SIGA’s largest shareholders are Blackrock (3.91M shares, 5.50%), Blackrock funding, inc. /de (3.53M shares, 4.93%), and Vanguard group (2.66M shares, 3.72%). Together, they hold 14.16% of SIGA’s total shares outstanding.

Does Blackrock own SIGA?

Yes, BlackRock owns 5.50% of SIGA, totaling 3.91M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 29.71M$. In the last quarter, BlackRock increased its holdings by 458.39K shares, a 13.27% change.

Who is SIGA’s biggest shareholder by percentage of total assets invested?

Altravue capital is SIGA’s biggest shareholder by percentage of total assets invested, with 1.83% of its assets in 2.42M SIGA shares, valued at 22.12M$.

Who is the top mutual fund holder of SIGA shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of SIGA shares, with 1.73% of its total shares outstanding invested in 1.24M SIGA shares.

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